Plate tectonics are one of the most large scale observable features on the planet.

Note that I said, we have plate tectonics which recycles our oceanic surface and gives us the means for the chemicals of life.

These oceanic subducting slabs can and have been imaged using seismic tomographic techniques along trench systems around the world, specifcally along the west coast of South America, beneath Japan to Indonesia and even the NW coast of the US in the Cascade chain of volcanoes. One can clearly see in the Hawaiian Island chain it's weathered remnants moving at about an inch or two per year toward eventual subduction beneath the Aleution chain, again giving rise to volcanism along it's arch.

Continenetal material on the other hand is less dense than oceanic crust and tends to resist subduction, and in some cases is added to at its edges by various oceanic material along the coast of California where, although subduction took place in the past, it's been altered by rotation of the western part of the continent giving rise to features such as the San Andreas Transform system which has clearly resulted in uplift exceeding erosion in Southern and Central California.

This would also explain how and why many marine fossils are incorporated onto continental platforms with their terrestrial counterparts.

Some good geology and astronomy courses could very much edify and even enhance your understanding of how God works in creation, as these surely have for me. It makes that pilgrimage all the more exiting in being able to fathom a little of His handiwork.